EXample equivalence class combinations One valid input is either Metric'or ' US/Imperial equivalence classes are Metric, US/Imperial, Other Another valid input is maxumum speed 1 to 750 km/h or I to 500 mph validity depends on whether metric or uS/imperial Equivalence classes are -∞.0],[1.500,[501.750],[751.∝ Some test combinations Metric, 1.500 valid US/Imperial, [501..750] Inva Metric,[501.750 va Metric,[501.750 valid www.oseng.com C Lethbridge/Laganiere 2001 Chapter 10: Testing and Inspecting for High Quality© Lethbridge/Laganière 2001 Chapter 10: Testing and Inspecting for High Quality 9 Example equivalence class combinations • One valid input is either ‘Metric’ or ‘US/Imperial’ —Equivalence classes are: - Metric, US/Imperial, Other • Another valid input is maxumum speed: 1 to 750 km/h or 1 to 500 mph —Validity depends on whether metric or US/imperial —Equivalence classes are: - [-∞..0], [1..500], [501..750], [751.. ∞] • Some test combinations - Metric, [1..500] valid - US/Imperial, [501..750] invalid - Metric, [501..750] valid - Metric, [501..750] valid